TM  5-5420-209-12 36 37 38 39 40 Table 4-2. Unit Preventive Maintenance Checks and Services (PMCS) for the Ramp Bay cont. Interval Weekly Monthly Monthly Monthly Monthly Location Item to Service/Check Hydraulic Pumps Hinges  and Pins Handlerail Posts and Rope Lift  Pockets  and Quick Release Pin Approach Ramps Item To Be Inspected Procedure Inspect pump well for evidence of oil accumulation. Inspect  hoses  for  compression,  cuts  or leakage. Inspect pump for leakage. Ensure directional lever and air vent function properly. Inspect  bow  to  roadway  ponton  connecting elongation. NOTE To  inspect  the  following  items properly, bay must be unfolded (on ground or in water). Inspect posts for cracks at support base, cracks/elongation  of  bolt  slots,  broken  or deformed rope ring and frayed or stretched rope. Ensure  pin  functions  properly. Inspect pin for cracks and broken strands on retaining wire rope. Inspect  pockets  for  cracks  and  broken  welds. NOTE Ramps are secured by headless  pins,  washers  and cotter  pins.  Missing  or deformed  retaining  hardware may  cause  severe  equipment damage. Inspect for cracks, ruptured seams, and broken welds. Equipment Is Not Ready/Available If Class II or III leak. Vent or lever does not function  properly. Any hinge cracked or elongation  allows  pinto move  freely. Handrail posts and rope missing. Ramp  retaining hardware missing or deformed. 4-17 Item N o . hinge brackets and pins for cracks and